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Old 10-05-2017, 06:39 PM   #1
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Posts: 2
Default 2004 L300 audio wiring

I've got a 2004 L300 that's in great shape and can probably last me another several years, but I'm itching to swap out the factory head unit with one that does Bluetooth.

My only problem is that this is one of the models with the advanced audio package with the factory amp and for whatever reason I can't find a definitive answer as to whether I can just use a normal harness or if there's any different harness or a bypass or other special wiring concerns I need to be aware of to make the thing work. I'd like to assume that since I haven't seen any straight answers I'm able to get the normal harness and be just fine, but measure twice, cut once, etc.

Can anyone confirm this for me? I've provided model numbers for the aftermarket parts I'm looking at below if that's any help.

Harness that seems to be right at least for the base model: Metra 70-2002
Aftermarket head unit: Pioneer MVH-X370BT


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